I've found this image by coincidence, but it immediately attracted my attention because I never saw such a scene in the anime.
Concerning the drawing style/animation (from the looks of it I doubt it's fan-made, it seems to be more like a screenshot), the sunset, Welkin's clothes (he wears them very rarely and if I remember correctly, he wears them only at the very end of the anime) and progression of the story (they end up together in the last episode (26)), this image has to be from the very end of the anime, but I couldn't find anything like it.
I've also watched it on different websites, but they all end with Alicia and Welkin holding hands in the sunset on a hill in front of their village.
Where is this screenshot from? Does that scene really happen in the anime or is it from the game?